73 Magazine #175 April 1975
YEAR: 1975
ITEM: Periodical
COMPANY: 73, Inc.
COUNTRY: U.S.A.
IN OUR COLLECTION: Yes
Amateur Radio 73 Magazine #175 April 1975. Retro calculator fans take note! There's a one page ad from Teco featuring the Novus 4520 Scientist for $99.95, and the Rockwell 61R Advanced Slide Rule Electronic Calculator for $79.95. A calculator called an advanced slide rule? I think Marshall McLuhan had something to say about that... edited by Curtis.
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Documents
Documents for this item have not yet been scanned or not yet posted. There are a lot of pages...contact us if you have an immediate need. (Although there are not a lot of "immediate needs" for a 70+ year old computer!)
OUR DEFINITIONS OF RARITY
One of a Kind: Only known existing item.
Exceedingly Rare: Only 2 to 10 known to exist.
Very Rare: Only 11 to 25 are known to exist.
Rare: Only 26 to 50 are known to exist.
Difficult: Difficult to find.
Available:Can be commonly be purchased.
Unknown: We cannot make a determination.
(For comparison: Many people consider the Apple-1 computer to be rare. As of 2025 there are 92 confirmed and probable Apple-1 computers.)
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